Write 10 lines on the usefulness of microorganisms in our lives.
A . Microorganisms are useful in our lives in the following ways :
(i) Bacteria cause the decay of dead plants and animals.
(ii) Nitrogen fixing bacteria convert the atmospheric nitrogen into nitrates.
(iii) Bacteria are used in the production of vinegar, curd, cheese, etc.
(iv) Bacteria are used in sewage disposal plants.
(v) Scientists have discovered ways to change bacteria so that they produce valuable medical,